This circuit is from an old documentation making use of a 3,579,645 MHz analog color television crystal. The audio amplifier supports the equivalent.
We got this circuit in a publication of 1987. This is an audio limiter, a circuit that cuts peaks...
When S1 is in 1, the circuit operates with of half the total power applied to the load. When in...
With the figure circuit it is possible to control the amount of heat generated by the heating...